A great place to walk, to broaden your horizons and to expand your knowledge. You can visit the Royal Observatory, the Maritime Museum, the house of Queen Anne. A very picturesque market, where craftsmen and craftswomen sell their products. In the park you can have a picnic on the lawn, admire the beautiful views of London. There are many beautiful flower beds. There are playgrounds for children.
I definitely recommend visiting, and even more so if you are with children. This is the same Greenwich - an iconic place in London, a worldwide reference point. It is located on a hill, beautiful views and interesting and informative museums. You can get there by river tram along the Thames ( at the same time , a sightseeing walk ) , berths are not uncommon, one of them is near the London Eye